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Security audit

core-web-vitals

Security checks for vulnerabilities and agentic risk

Overview

This is a documentation-only Core Web Vitals guidance skill with no executable code, persistence, credential use, or hidden high-impact behavior.

Before installing, note that this skill may activate for general page speed or page performance requests, not only explicit Core Web Vitals issues. That is a routing precision issue, not a sign of unsafe behavior in the inspected artifact.

Vulnerability Patterns
  • Skill Instruction HijackingAlters the agent's session goals or safety constraints when the skill loads
  • Agent Memory PoisoningWrites attacker-controlled rules into memory that affect later sessions
  • Remote Payload Retrieval and ExecutionFetches external code whose behavior can change after review
  • Embedded Malicious CodeShips malicious scripts inside the skill and executes them locally
  • Unauthorized Access and Privilege EscalationObtains permissions beyond the task's legitimate needs
Vulnerability Patterns
  • Trigger AbuseOverly Broad Trigger, Shadow Command Trigger, Keyword Baiting Trigger
  • Prompt InjectionInstruction Override, Hidden Instructions, Exfiltration Commands
  • Data ExfiltrationExternal Transmission, Env Variable Harvesting, File System Enumeration
  • Privilege EscalationExcessive Permissions, Sudo/Root Execution, Credential Access
  • Supply ChainUnpinned Dependencies, External Script Fetching, Obfuscated Code
Findings (1)

Vague Triggers

Medium
Category
Not specified by scanner
Confidence
95% confidence
Finding

The manifest says to use this skill when the user mentions broad phrases like "page speed" or "page performance," which commonly occur in many general web optimization contexts unrelated to Core Web Vitals. It does not provide exclusion conditions or negative examples to distinguish CWV-specific cases from broader performance discussions.

Content

No source excerpt is available for this finding.